Messages in this thread | | | Date | Mon, 18 May 2015 12:59:23 -0700 | From | Alexei Starovoitov <> | Subject | Re: [RFC PATCH 4/5] samples/bpf: Add proper prefix to objects in Makefile |
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On 5/17/15 10:30 PM, He Kuang wrote: > Always use $(obj) when referring to generated files and use $(src) when > referring to files located in the src tree. > > Signed-off-by: He Kuang <hekuang@huawei.com> > --- > samples/bpf/Makefile | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile > index 76e3458..8fdbd73 100644 > --- a/samples/bpf/Makefile > +++ b/samples/bpf/Makefile > @@ -44,7 +44,7 @@ HOSTLOADLIBES_tracex4 += -lelf -lrt > # point this to your LLVM backend with bpf support > LLC=$(srctree)/tools/bpf/llvm/bld/Debug+Asserts/bin/llc > > -%.o: %.c > +$(obj)/%.o: $(src)/%.c > clang $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ > -D__KERNEL__ -Wno-unused-value -Wno-pointer-sign \ > -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
the same fix is already in net-next: https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=b88c06e36dcb9b4ae285f7821f62d68dc34b25d3
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